Gravity-sprayer.



DE WANE B. SMITH.

GRAVITY SPRAYER.

APPLICATNN FILED APR. 2s. 1911.

Patented Nov. 2, 1915.

INVENTOR De Wam@ E). Smth.

WITNESSES 4MM/r( wm 5:5 www ATTORNEYS DE WANE B. SMITH, OF DEERFIELD,NEW YORK.

GRAVITY-SPRAYER.

Specicaton of Letters Patent.

Patented Nov. 2, 1915.

Application filed Apr128, 1911,r Serial No. 623,848.

To all whom it 'may concern Be it known that I, DE VVANE B. SMITH, ofDeerfield, in the county of Oneida and State of New York, have inventedcertain new and useful Improvements in Gravity- Sprayers; and I dohereby declare that the following is a full, clear, and exactdescription thereof, which will enable others skilled in the art towhich it appertains to make and use the same, reference being had to theaccompanying drawings, and to the reference-numerals marked thereon,which form part of this specification. A

The purpose of my present invention is to provide a sprayer of improvedconstruction and increased eliiciency. My improvements obtain greaterease, regularity and certainty of operation, prevent waste of the liquidand prevent the sprayer from becoming clogged with the liquid.

The invention has particular reference to the class known as gravitysprayers, wherein the liquid is fed tothe air blast by its own weightprincipally instead of being drawn against its weight to the blast bythe suction produced by the air blast.

Figure 1 is a vertical longitudinal sectional view of a sprayerembodying my invention and Fig. 2 is a front elevation of the same.

Referring to the drawings in a more particular description the sprayerhas an air compression chamber 3 preferably cylindrical in form, inwhich is located the plunger 4L, operated by the piston-rod 5 extendingfrom the rear end of the chamber and having a handle 6. The front end ofthe air compression chamber 3 is closed by a head 7 which has one ormore perforations forming blast openings 8. Above the front end of thechamber 3, is secured the liquid receptacle 9 from the lower frontportion of which small liquid tubes 10 lead downwardly in front of thehead 7 to points respectively approximate the blast openings S. The head7 is further provided with an opening 11 over which is placed a stopvalve 12 readily opening when the plunger 4L is drawn back from the headand closing when the plunger is forced forward again. The liquid is putint-o the liquid receptacle 9 through a convenient mouth closed by ascrew cap 13.

In operation the liquid, which for this class of sprayer, will usuallybe a thick liquid, runs slowly down through the liquid tubes 10 at thelower' ends of which it will ing it forward from the sprayer. As theplunger 1 is drawn back for the next stroke, the valve 12 is at onceopened by the suction of this backward movement of the plunger and asthe opening 11 of this valve 1 2 is larger than the openings 8, enoughair is freely admitted through the opening 11 to prevent the suction atthe openings 8 from being suflicient to draw into the chamber 3 any ofthe liquid that is gradually accumulating at the lower ends of the tubes10 and to prevent such suction drawing the liquid down through the tubes10 from the ends of which it might drop before the next forward strokeand so be wasted. This plentiful air Supply on the backward stroke ofthe plunger, allows the backward stroke to be made much quicker and withmuch less expenditure of force and also allows the sprayer to be usedwith greater certainty of results and by people who would not be carefulenough to make the backward stroke slowly enough were there no reliefvalve 12.

In providing against the liquid entering the air compression chamber,the difficulty of the liquid corroding or gumming up the chamber orworking parts is obviated and this tends to make the sprayer durable andeasy of operation and also prevents the liquid Vfrom accumulating in thecompression chamber and being thence thrown out in a solid jet resultingin waste of the liquid and damage to the thing or animal being sprayed.

When not in use the sprayer is turned upside down to prevent the liquidescaping. If as is preferable the liquid receptacle 9 is cylindrical arest 14 may be provided on what is normally its top to prevent thesprayer rolling` over on its side.

It is evident that modifications in and from the construction shown maybe made without departing from the spirit of my invention as hereinafterclaimed.

What I claim as new and desire to secure by Letters Patent is:

1. The combination in a sprayer for thick liquids, of an air compressionchamber, a plunger operating therein, blast openings in the head of saidchamber, a liquid receptacle above said chamber, tubes leading from saidreceptacle to points respectively approximate the blast openings and atright angles to the air blasts therefrom and adapted to convey theliquid thereto by 'its Weight and suspendsaid liquid in drops beforesaid blast openings and a check valve in the front end of said chamberadapted to open on the backward movement of the plungerand vadmit airthrough the hea-d of said chamber Without drawing' said liquid thereintoand to close on the forward movement of the plunger and cause the airexpelled through said blast openings to strike said depending drops. l

2. In a sprayer for thick liquids a compression chamber having; in itshead blast openingsand a cheek valve, a plunger operatingin saidchamber, a liquid receptacle above said chamber, tubes leading from the'bottom of the said receptacle to points With- Gopies ofv this patentmay be obtained for out the head respectively approximate said blastopenings and at right angles to the air blasts therefrom and adapted toconvey thev liquid thereto by its own weight and suspend said liquid indrops before said blast openings, said check valve being adaptved toopen on the backward movement of said plunger and admit air to saidchamber without drawingjy said liquid thereinto and to close uponforward movement of said plunger and cause the air expelled through saidblast openings to strike said depending drops.

In witness whereof I have alixed my signature, in the presence of twowitnesses, this 22nd day of April, 1911.

DE IVANE B. SMITH.

Vitnesses:

HARRIET VILLIAMS, JAMES E. Birmanie.

ve cents each, by addressing the Commissioner of Patents, Washington, D.C.

